drivers/media/pci/cx25821/cx25821-video.c

   1 /*
   2  *  Driver for the Conexant CX25821 PCIe bridge
   3  *
   4  *  Copyright (C) 2009 Conexant Systems Inc.
   5  *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
   6  *  Based on Steven Toth <stoth@linuxtv.org> cx25821 driver
   7  *  Parts adapted/taken from Eduardo Moscoso Rubino
   8  *  Copyright (C) 2009 Eduardo Moscoso Rubino <moscoso@TopoLogica.com>
   9  *
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  28
  29 #include "cx25821-video.h"
  30
  31 MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
  32 MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
  33 MODULE_LICENSE("GPL");
  34
  35 static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
  36
  37 module_param_array(video_nr, int, NULL, 0444);
  38
  39 MODULE_PARM_DESC(video_nr, "video device numbers");
  40
  41 static unsigned int video_debug = VIDEO_DEBUG;
  42 module_param(video_debug, int, 0644);
  43 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
  44
  45 static unsigned int irq_debug;
  46 module_param(irq_debug, int, 0644);
  47 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
  48
  49 #define FORMAT_FLAGS_PACKED       0x01
  50
  51 static const struct cx25821_fmt formats[] = {
  52         {
  53                 .name = "4:1:1, packed, Y41P",
  54                 .fourcc = V4L2_PIX_FMT_Y41P,
  55                 .depth = 12,
  56                 .flags = FORMAT_FLAGS_PACKED,
  57         }, {
  58                 .name = "4:2:2, packed, YUYV",
  59                 .fourcc = V4L2_PIX_FMT_YUYV,
  60                 .depth = 16,
  61                 .flags = FORMAT_FLAGS_PACKED,
  62         },
  63 };
  64
  65 static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc)
  66 {
  67         unsigned int i;
  68
  69         for (i = 0; i < ARRAY_SIZE(formats); i++)
  70                 if (formats[i].fourcc == fourcc)
  71                         return formats + i;
  72         return NULL;
  73 }
  74
  75 int cx25821_start_video_dma(struct cx25821_dev *dev,
  76                             struct cx25821_dmaqueue *q,
  77                             struct cx25821_buffer *buf,
  78                             const struct sram_channel *channel)
  79 {
  80         int tmp = 0;
  81
  82         /* setup fifo + format */
  83         cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma);
  84
  85         /* reset counter */
  86         cx_write(channel->gpcnt_ctl, 3);
  87
  88         /* enable irq */
  89         cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i));
  90         cx_set(channel->int_msk, 0x11);
  91
  92         /* start dma */
  93         cx_write(channel->dma_ctl, 0x11);       /* FIFO and RISC enable */
  94
  95         /* make sure upstream setting if any is reversed */
  96         tmp = cx_read(VID_CH_MODE_SEL);
  97         cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
  98
  99         return 0;
 100 }
 101
 102 int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status)
 103 {
 104         int handled = 0;
 105         u32 mask;
 106         const struct sram_channel *channel = dev->channels[chan_num].sram_channels;
 107
 108         mask = cx_read(channel->int_msk);
 109         if (0 == (status & mask))
 110                 return handled;
 111
 112         cx_write(channel->int_stat, status);
 113
 114         /* risc op code error */
 115         if (status & (1 << 16)) {
 116                 pr_warn("%s, %s: video risc op code error\n",
 117                         dev->name, channel->name);
 118                 cx_clear(channel->dma_ctl, 0x11);
 119                 cx25821_sram_channel_dump(dev, channel);
 120         }
 121
 122         /* risc1 y */
 123         if (status & FLD_VID_DST_RISC1) {
 124                 struct cx25821_dmaqueue *dmaq =
 125                         &dev->channels[channel->i].dma_vidq;
 126                 struct cx25821_buffer *buf;
 127
 128                 spin_lock(&dev->slock);
 129                 if (!list_empty(&dmaq->active)) {
 130                         buf = list_entry(dmaq->active.next,
 131                                          struct cx25821_buffer, queue);
 132
 133                         buf->vb.vb2_buf.timestamp = ktime_get_ns();
 134                         buf->vb.sequence = dmaq->count++;
 135                         list_del(&buf->queue);
 136                         vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
 137                 }
 138                 spin_unlock(&dev->slock);
 139                 handled++;
 140         }
 141         return handled;
 142 }
 143
 144 static int cx25821_queue_setup(struct vb2_queue *q,
 145                            unsigned int *num_buffers, unsigned int *num_planes,
 146                            unsigned int sizes[], struct device *alloc_devs[])
 147 {
 148         struct cx25821_channel *chan = q->drv_priv;
 149         unsigned size = (chan->fmt->depth * chan->width * chan->height) >> 3;
 150
 151         if (*num_planes)
 152                 return sizes[0] < size ? -EINVAL : 0;
 153
 154         *num_planes = 1;
 155         sizes[0] = size;
 156         return 0;
 157 }
 158
 159 static int cx25821_buffer_prepare(struct vb2_buffer *vb)
 160 {
 161         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 162         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 163         struct cx25821_dev *dev = chan->dev;
 164         struct cx25821_buffer *buf =
 165                 container_of(vbuf, struct cx25821_buffer, vb);
 166         struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
 167         u32 line0_offset;
 168         int bpl_local = LINE_SIZE_D1;
 169         int ret;
 170
 171         if (chan->pixel_formats == PIXEL_FRMT_411)
 172                 buf->bpl = (chan->fmt->depth * chan->width) >> 3;
 173         else
 174                 buf->bpl = (chan->fmt->depth >> 3) * chan->width;
 175
 176         if (vb2_plane_size(vb, 0) < chan->height * buf->bpl)
 177                 return -EINVAL;
 178         vb2_set_plane_payload(vb, 0, chan->height * buf->bpl);
 179         buf->vb.field = chan->field;
 180
 181         if (chan->pixel_formats == PIXEL_FRMT_411) {
 182                 bpl_local = buf->bpl;
 183         } else {
 184                 bpl_local = buf->bpl;   /* Default */
 185
 186                 if (chan->use_cif_resolution) {
 187                         if (dev->tvnorm & V4L2_STD_625_50)
 188                                 bpl_local = 352 << 1;
 189                         else
 190                                 bpl_local = chan->cif_width << 1;
 191                 }
 192         }
 193
 194         switch (chan->field) {
 195         case V4L2_FIELD_TOP:
 196                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 197                                 sgt->sgl, 0, UNSET,
 198                                 buf->bpl, 0, chan->height);
 199                 break;
 200         case V4L2_FIELD_BOTTOM:
 201                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 202                                 sgt->sgl, UNSET, 0,
 203                                 buf->bpl, 0, chan->height);
 204                 break;
 205         case V4L2_FIELD_INTERLACED:
 206                 /* All other formats are top field first */
 207                 line0_offset = 0;
 208                 dprintk(1, "top field first\n");
 209
 210                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 211                                 sgt->sgl, line0_offset,
 212                                 bpl_local, bpl_local, bpl_local,
 213                                 chan->height >> 1);
 214                 break;
 215         case V4L2_FIELD_SEQ_TB:
 216                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 217                                 sgt->sgl,
 218                                 0, buf->bpl * (chan->height >> 1),
 219                                 buf->bpl, 0, chan->height >> 1);
 220                 break;
 221         case V4L2_FIELD_SEQ_BT:
 222                 ret = cx25821_risc_buffer(dev->pci, &buf->risc,
 223                                 sgt->sgl,
 224                                 buf->bpl * (chan->height >> 1), 0,
 225                                 buf->bpl, 0, chan->height >> 1);
 226                 break;
 227         default:
 228                 WARN_ON(1);
 229                 ret = -EINVAL;
 230                 break;
 231         }
 232
 233         dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
 234                 buf, buf->vb.vb2_buf.index, chan->width, chan->height,
 235                 chan->fmt->depth, chan->fmt->name,
 236                 (unsigned long)buf->risc.dma);
 237
 238         return ret;
 239 }
 240
 241 static void cx25821_buffer_finish(struct vb2_buffer *vb)
 242 {
 243         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 244         struct cx25821_buffer *buf =
 245                 container_of(vbuf, struct cx25821_buffer, vb);
 246         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 247         struct cx25821_dev *dev = chan->dev;
 248
 249         cx25821_free_buffer(dev, buf);
 250 }
 251
 252 static void cx25821_buffer_queue(struct vb2_buffer *vb)
 253 {
 254         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 255         struct cx25821_buffer *buf =
 256                 container_of(vbuf, struct cx25821_buffer, vb);
 257         struct cx25821_channel *chan = vb->vb2_queue->drv_priv;
 258         struct cx25821_dev *dev = chan->dev;
 259         struct cx25821_buffer *prev;
 260         struct cx25821_dmaqueue *q = &dev->channels[chan->id].dma_vidq;
 261
 262         buf->risc.cpu[1] = cpu_to_le32(buf->risc.dma + 12);
 263         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_CNT_INC);
 264         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma + 12);
 265         buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
 266
 267         if (list_empty(&q->active)) {
 268                 list_add_tail(&buf->queue, &q->active);
 269         } else {
 270                 buf->risc.cpu[0] |= cpu_to_le32(RISC_IRQ1);
 271                 prev = list_entry(q->active.prev, struct cx25821_buffer,
 272                                 queue);
 273                 list_add_tail(&buf->queue, &q->active);
 274                 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 275         }
 276 }
 277
 278 static int cx25821_start_streaming(struct vb2_queue *q, unsigned int count)
 279 {
 280         struct cx25821_channel *chan = q->drv_priv;
 281         struct cx25821_dev *dev = chan->dev;
 282         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 283         struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 284                         struct cx25821_buffer, queue);
 285
 286         dmaq->count = 0;
 287         cx25821_start_video_dma(dev, dmaq, buf, chan->sram_channels);
 288         return 0;
 289 }
 290
 291 static void cx25821_stop_streaming(struct vb2_queue *q)
 292 {
 293         struct cx25821_channel *chan = q->drv_priv;
 294         struct cx25821_dev *dev = chan->dev;
 295         struct cx25821_dmaqueue *dmaq = &dev->channels[chan->id].dma_vidq;
 296         unsigned long flags;
 297
 298         cx_write(chan->sram_channels->dma_ctl, 0); /* FIFO and RISC disable */
 299         spin_lock_irqsave(&dev->slock, flags);
 300         while (!list_empty(&dmaq->active)) {
 301                 struct cx25821_buffer *buf = list_entry(dmaq->active.next,
 302                         struct cx25821_buffer, queue);
 303
 304                 list_del(&buf->queue);
 305                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 306         }
 307         spin_unlock_irqrestore(&dev->slock, flags);
 308 }
 309
 310 static const struct vb2_ops cx25821_video_qops = {
 311         .queue_setup    = cx25821_queue_setup,
 312         .buf_prepare  = cx25821_buffer_prepare,
 313         .buf_finish = cx25821_buffer_finish,
 314         .buf_queue    = cx25821_buffer_queue,
 315         .wait_prepare = vb2_ops_wait_prepare,
 316         .wait_finish = vb2_ops_wait_finish,
 317         .start_streaming = cx25821_start_streaming,
 318         .stop_streaming = cx25821_stop_streaming,
 319 };
 320
 321 /* VIDEO IOCTLS */
 322
 323 static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 324                             struct v4l2_fmtdesc *f)
 325 {
 326         if (unlikely(f->index >= ARRAY_SIZE(formats)))
 327                 return -EINVAL;
 328
 329         strlcpy(f->description, formats[f->index].name, sizeof(f->description));
 330         f->pixelformat = formats[f->index].fourcc;
 331
 332         return 0;
 333 }
 334
 335 static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 336                                  struct v4l2_format *f)
 337 {
 338         struct cx25821_channel *chan = video_drvdata(file);
 339
 340         f->fmt.pix.width = chan->width;
 341         f->fmt.pix.height = chan->height;
 342         f->fmt.pix.field = chan->field;
 343         f->fmt.pix.pixelformat = chan->fmt->fourcc;
 344         f->fmt.pix.bytesperline = (chan->width * chan->fmt->depth) >> 3;
 345         f->fmt.pix.sizeimage = chan->height * f->fmt.pix.bytesperline;
 346         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 347
 348         return 0;
 349 }
 350
 351 static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 352                                    struct v4l2_format *f)
 353 {
 354         struct cx25821_channel *chan = video_drvdata(file);
 355         struct cx25821_dev *dev = chan->dev;
 356         const struct cx25821_fmt *fmt;
 357         enum v4l2_field field = f->fmt.pix.field;
 358         unsigned int maxh;
 359         unsigned w;
 360
 361         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 362         if (NULL == fmt)
 363                 return -EINVAL;
 364         maxh = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 365
 366         w = f->fmt.pix.width;
 367         if (field != V4L2_FIELD_BOTTOM)
 368                 field = V4L2_FIELD_TOP;
 369         if (w < 352) {
 370                 w = 176;
 371                 f->fmt.pix.height = maxh / 4;
 372         } else if (w < 720) {
 373                 w = 352;
 374                 f->fmt.pix.height = maxh / 2;
 375         } else {
 376                 w = 720;
 377                 f->fmt.pix.height = maxh;
 378                 field = V4L2_FIELD_INTERLACED;
 379         }
 380         f->fmt.pix.field = field;
 381         f->fmt.pix.width = w;
 382         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 383         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 384         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 385
 386         return 0;
 387 }
 388
 389 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 390                                 struct v4l2_format *f)
 391 {
 392         struct cx25821_channel *chan = video_drvdata(file);
 393         struct cx25821_dev *dev = chan->dev;
 394         int pix_format = PIXEL_FRMT_422;
 395         int err;
 396
 397         err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
 398
 399         if (0 != err)
 400                 return err;
 401
 402         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 403         chan->field = f->fmt.pix.field;
 404         chan->width = f->fmt.pix.width;
 405         chan->height = f->fmt.pix.height;
 406
 407         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 408                 pix_format = PIXEL_FRMT_411;
 409         else
 410                 pix_format = PIXEL_FRMT_422;
 411
 412         cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
 413
 414         /* check if cif resolution */
 415         if (chan->width == 320 || chan->width == 352)
 416                 chan->use_cif_resolution = 1;
 417         else
 418                 chan->use_cif_resolution = 0;
 419
 420         chan->cif_width = chan->width;
 421         medusa_set_resolution(dev, chan->width, SRAM_CH00);
 422         return 0;
 423 }
 424
 425 static int vidioc_log_status(struct file *file, void *priv)
 426 {
 427         struct cx25821_channel *chan = video_drvdata(file);
 428         struct cx25821_dev *dev = chan->dev;
 429         const struct sram_channel *sram_ch = chan->sram_channels;
 430         u32 tmp = 0;
 431
 432         tmp = cx_read(sram_ch->dma_ctl);
 433         pr_info("Video input 0 is %s\n",
 434                 (tmp & 0x11) ? "streaming" : "stopped");
 435         return 0;
 436 }
 437
 438
 439 static int cx25821_vidioc_querycap(struct file *file, void *priv,
 440                             struct v4l2_capability *cap)
 441 {
 442         struct cx25821_channel *chan = video_drvdata(file);
 443         struct cx25821_dev *dev = chan->dev;
 444         const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
 445                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 446         const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE;
 447
 448         strcpy(cap->driver, "cx25821");
 449         strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
 450         sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
 451         if (chan->id >= VID_CHANNEL_NUM)
 452                 cap->device_caps = cap_output;
 453         else
 454                 cap->device_caps = cap_input;
 455         cap->capabilities = cap_input | cap_output | V4L2_CAP_DEVICE_CAPS;
 456         return 0;
 457 }
 458
 459 static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
 460 {
 461         struct cx25821_channel *chan = video_drvdata(file);
 462
 463         *tvnorms = chan->dev->tvnorm;
 464         return 0;
 465 }
 466
 467 static int cx25821_vidioc_s_std(struct file *file, void *priv,
 468                                 v4l2_std_id tvnorms)
 469 {
 470         struct cx25821_channel *chan = video_drvdata(file);
 471         struct cx25821_dev *dev = chan->dev;
 472
 473         if (dev->tvnorm == tvnorms)
 474                 return 0;
 475
 476         dev->tvnorm = tvnorms;
 477         chan->width = 720;
 478         chan->height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 479
 480         medusa_set_videostandard(dev);
 481
 482         return 0;
 483 }
 484
 485 static int cx25821_vidioc_enum_input(struct file *file, void *priv,
 486                               struct v4l2_input *i)
 487 {
 488         if (i->index)
 489                 return -EINVAL;
 490
 491         i->type = V4L2_INPUT_TYPE_CAMERA;
 492         i->std = CX25821_NORMS;
 493         strcpy(i->name, "Composite");
 494         return 0;
 495 }
 496
 497 static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
 498 {
 499         *i = 0;
 500         return 0;
 501 }
 502
 503 static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
 504 {
 505         return i ? -EINVAL : 0;
 506 }
 507
 508 static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
 509 {
 510         struct cx25821_channel *chan =
 511                 container_of(ctrl->handler, struct cx25821_channel, hdl);
 512         struct cx25821_dev *dev = chan->dev;
 513
 514         switch (ctrl->id) {
 515         case V4L2_CID_BRIGHTNESS:
 516                 medusa_set_brightness(dev, ctrl->val, chan->id);
 517                 break;
 518         case V4L2_CID_HUE:
 519                 medusa_set_hue(dev, ctrl->val, chan->id);
 520                 break;
 521         case V4L2_CID_CONTRAST:
 522                 medusa_set_contrast(dev, ctrl->val, chan->id);
 523                 break;
 524         case V4L2_CID_SATURATION:
 525                 medusa_set_saturation(dev, ctrl->val, chan->id);
 526                 break;
 527         default:
 528                 return -EINVAL;
 529         }
 530         return 0;
 531 }
 532
 533 static int cx25821_vidioc_enum_output(struct file *file, void *priv,
 534                               struct v4l2_output *o)
 535 {
 536         if (o->index)
 537                 return -EINVAL;
 538
 539         o->type = V4L2_INPUT_TYPE_CAMERA;
 540         o->std = CX25821_NORMS;
 541         strcpy(o->name, "Composite");
 542         return 0;
 543 }
 544
 545 static int cx25821_vidioc_g_output(struct file *file, void *priv, unsigned int *o)
 546 {
 547         *o = 0;
 548         return 0;
 549 }
 550
 551 static int cx25821_vidioc_s_output(struct file *file, void *priv, unsigned int o)
 552 {
 553         return o ? -EINVAL : 0;
 554 }
 555
 556 static int cx25821_vidioc_try_fmt_vid_out(struct file *file, void *priv,
 557                                    struct v4l2_format *f)
 558 {
 559         struct cx25821_channel *chan = video_drvdata(file);
 560         struct cx25821_dev *dev = chan->dev;
 561         const struct cx25821_fmt *fmt;
 562
 563         fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 564         if (NULL == fmt)
 565                 return -EINVAL;
 566         f->fmt.pix.width = 720;
 567         f->fmt.pix.height = (dev->tvnorm & V4L2_STD_625_50) ? 576 : 480;
 568         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
 569         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 570         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 571         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 572         return 0;
 573 }
 574
 575 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
 576                                 struct v4l2_format *f)
 577 {
 578         struct cx25821_channel *chan = video_drvdata(file);
 579         int err;
 580
 581         err = cx25821_vidioc_try_fmt_vid_out(file, priv, f);
 582
 583         if (0 != err)
 584                 return err;
 585
 586         chan->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat);
 587         chan->field = f->fmt.pix.field;
 588         chan->width = f->fmt.pix.width;
 589         chan->height = f->fmt.pix.height;
 590         if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
 591                 chan->pixel_formats = PIXEL_FRMT_411;
 592         else
 593                 chan->pixel_formats = PIXEL_FRMT_422;
 594         return 0;
 595 }
 596
 597 static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
 598         .s_ctrl = cx25821_s_ctrl,
 599 };
 600
 601 static const struct v4l2_file_operations video_fops = {
 602         .owner = THIS_MODULE,
 603         .open = v4l2_fh_open,
 604         .release        = vb2_fop_release,
 605         .read           = vb2_fop_read,
 606         .poll           = vb2_fop_poll,
 607         .unlocked_ioctl = video_ioctl2,
 608         .mmap           = vb2_fop_mmap,
 609 };
 610
 611 static const struct v4l2_ioctl_ops video_ioctl_ops = {
 612         .vidioc_querycap = cx25821_vidioc_querycap,
 613         .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
 614         .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
 615         .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
 616         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
 617         .vidioc_reqbufs       = vb2_ioctl_reqbufs,
 618         .vidioc_prepare_buf   = vb2_ioctl_prepare_buf,
 619         .vidioc_create_bufs   = vb2_ioctl_create_bufs,
 620         .vidioc_querybuf      = vb2_ioctl_querybuf,
 621         .vidioc_qbuf          = vb2_ioctl_qbuf,
 622         .vidioc_dqbuf         = vb2_ioctl_dqbuf,
 623         .vidioc_streamon      = vb2_ioctl_streamon,
 624         .vidioc_streamoff     = vb2_ioctl_streamoff,
 625         .vidioc_g_std = cx25821_vidioc_g_std,
 626         .vidioc_s_std = cx25821_vidioc_s_std,
 627         .vidioc_enum_input = cx25821_vidioc_enum_input,
 628         .vidioc_g_input = cx25821_vidioc_g_input,
 629         .vidioc_s_input = cx25821_vidioc_s_input,
 630         .vidioc_log_status = vidioc_log_status,
 631         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
 632         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 633 };
 634
 635 static const struct video_device cx25821_video_device = {
 636         .name = "cx25821-video",
 637         .fops = &video_fops,
 638         .release = video_device_release_empty,
 639         .minor = -1,
 640         .ioctl_ops = &video_ioctl_ops,
 641         .tvnorms = CX25821_NORMS,
 642 };
 643
 644 static const struct v4l2_file_operations video_out_fops = {
 645         .owner = THIS_MODULE,
 646         .open = v4l2_fh_open,
 647         .release        = vb2_fop_release,
 648         .write          = vb2_fop_write,
 649         .poll           = vb2_fop_poll,
 650         .unlocked_ioctl = video_ioctl2,
 651         .mmap           = vb2_fop_mmap,
 652 };
 653
 654 static const struct v4l2_ioctl_ops video_out_ioctl_ops = {
 655         .vidioc_querycap = cx25821_vidioc_querycap,
 656         .vidioc_enum_fmt_vid_out = cx25821_vidioc_enum_fmt_vid_cap,
 657         .vidioc_g_fmt_vid_out = cx25821_vidioc_g_fmt_vid_cap,
 658         .vidioc_try_fmt_vid_out = cx25821_vidioc_try_fmt_vid_out,
 659         .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
 660         .vidioc_g_std = cx25821_vidioc_g_std,
 661         .vidioc_s_std = cx25821_vidioc_s_std,
 662         .vidioc_enum_output = cx25821_vidioc_enum_output,
 663         .vidioc_g_output = cx25821_vidioc_g_output,
 664         .vidioc_s_output = cx25821_vidioc_s_output,
 665         .vidioc_log_status = vidioc_log_status,
 666 };
 667
 668 static const struct video_device cx25821_video_out_device = {
 669         .name = "cx25821-video",
 670         .fops = &video_out_fops,
 671         .release = video_device_release_empty,
 672         .minor = -1,
 673         .ioctl_ops = &video_out_ioctl_ops,
 674         .tvnorms = CX25821_NORMS,
 675 };
 676
 677 void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num)
 678 {
 679         cx_clear(PCI_INT_MSK, 1);
 680
 681         if (video_is_registered(&dev->channels[chan_num].vdev)) {
 682                 video_unregister_device(&dev->channels[chan_num].vdev);
 683                 v4l2_ctrl_handler_free(&dev->channels[chan_num].hdl);
 684         }
 685 }
 686
 687 int cx25821_video_register(struct cx25821_dev *dev)
 688 {
 689         int err;
 690         int i;
 691
 692         /* initial device configuration */
 693         dev->tvnorm = V4L2_STD_NTSC_M;
 694
 695         spin_lock_init(&dev->slock);
 696
 697         for (i = 0; i < MAX_VID_CAP_CHANNEL_NUM - 1; ++i) {
 698                 struct cx25821_channel *chan = &dev->channels[i];
 699                 struct video_device *vdev = &chan->vdev;
 700                 struct v4l2_ctrl_handler *hdl = &chan->hdl;
 701                 struct vb2_queue *q;
 702                 bool is_output = i > SRAM_CH08;
 703
 704                 if (i == SRAM_CH08) /* audio channel */
 705                         continue;
 706
 707                 if (!is_output) {
 708                         v4l2_ctrl_handler_init(hdl, 4);
 709                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 710                                         V4L2_CID_BRIGHTNESS, 0, 10000, 1, 6200);
 711                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 712                                         V4L2_CID_CONTRAST, 0, 10000, 1, 5000);
 713                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 714                                         V4L2_CID_SATURATION, 0, 10000, 1, 5000);
 715                         v4l2_ctrl_new_std(hdl, &cx25821_ctrl_ops,
 716                                         V4L2_CID_HUE, 0, 10000, 1, 5000);
 717                         if (hdl->error) {
 718                                 err = hdl->error;
 719                                 goto fail_unreg;
 720                         }
 721                         err = v4l2_ctrl_handler_setup(hdl);
 722                         if (err)
 723                                 goto fail_unreg;
 724                 } else {
 725                         chan->out = &dev->vid_out_data[i - SRAM_CH09];
 726                         chan->out->chan = chan;
 727                 }
 728
 729                 chan->sram_channels = &cx25821_sram_channels[i];
 730                 chan->width = 720;
 731                 chan->field = V4L2_FIELD_INTERLACED;
 732                 if (dev->tvnorm & V4L2_STD_625_50)
 733                         chan->height = 576;
 734                 else
 735                         chan->height = 480;
 736
 737                 if (chan->pixel_formats == PIXEL_FRMT_411)
 738                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_Y41P);
 739                 else
 740                         chan->fmt = cx25821_format_by_fourcc(V4L2_PIX_FMT_YUYV);
 741
 742                 cx_write(chan->sram_channels->int_stat, 0xffffffff);
 743
 744                 INIT_LIST_HEAD(&chan->dma_vidq.active);
 745
 746                 q = &chan->vidq;
 747
 748                 q->type = is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
 749                                       V4L2_BUF_TYPE_VIDEO_CAPTURE;
 750                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
 751                 q->io_modes |= is_output ? VB2_WRITE : VB2_READ;
 752                 q->gfp_flags = GFP_DMA32;
 753                 q->min_buffers_needed = 2;
 754                 q->drv_priv = chan;
 755                 q->buf_struct_size = sizeof(struct cx25821_buffer);
 756                 q->ops = &cx25821_video_qops;
 757                 q->mem_ops = &vb2_dma_sg_memops;
 758                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 759                 q->lock = &dev->lock;
 760                 q->dev = &dev->pci->dev;
 761
 762                 if (!is_output) {
 763                         err = vb2_queue_init(q);
 764                         if (err < 0)
 765                                 goto fail_unreg;
 766                 }
 767
 768                 /* register v4l devices */
 769                 *vdev = is_output ? cx25821_video_out_device : cx25821_video_device;
 770                 vdev->v4l2_dev = &dev->v4l2_dev;
 771                 if (!is_output)
 772                         vdev->ctrl_handler = hdl;
 773                 else
 774                         vdev->vfl_dir = VFL_DIR_TX;
 775                 vdev->lock = &dev->lock;
 776                 vdev->queue = q;
 777                 snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
 778                 video_set_drvdata(vdev, chan);
 779
 780                 err = video_register_device(vdev, VFL_TYPE_GRABBER,
 781                                             video_nr[dev->nr]);
 782
 783                 if (err < 0)
 784                         goto fail_unreg;
 785         }
 786
 787         /* set PCI interrupt */
 788         cx_set(PCI_INT_MSK, 0xff);
 789
 790         return 0;
 791
 792 fail_unreg:
 793         while (i >= 0)
 794                 cx25821_video_unregister(dev, i--);
 795         return err;
 796 }